Fig. 2From: Validation and clinical evaluation of a Polish translation of the Wisconsin Upper Respiratory Symptom Survey for Kids (WURSS-K)Structure of the Polish version of Wisconsin upper respiratory symptom survey for kids (the left diagram: the first day of measurement; the right diagram: the sixth day of measurement). Correlations between latent variables and items are represented with arrows. The number next to the items indicates how much variance was explained in the item. f1—symptom subscale, f2—functional subscaleBack to article page